<template>
  <div>
    <!--面包屑导航-->
    <el-breadcrumb separator-class="el-icon-arrow-right">
        <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
        <el-breadcrumb-item>数据统计</el-breadcrumb-item>
        <el-breadcrumb-item>数据报表</el-breadcrumb-item>
    </el-breadcrumb>
    <!--卡片视图-->
    <el-card class="box-card">
      <!--②echarts容器：必须具备大小-->
      <div ref="echartContainer" style="width: 750px;height:400px;"></div>
    </el-card>
  </div>
</template>

<script>
// ①导入echarts.js
import echarts from 'echarts'
// 导入lodash
import _ from 'lodash'
export default {
  data () {
    return {
      // ④指定图表的配置项和数据
      options: {
        title: {
          text: '用户来源'
        },
        tooltip: {
          trigger: 'axis',
          axisPointer: {
            type: 'cross',
            label: {
              backgroundColor: '#E9EEF3'
            }
          }
        },
        grid: {
          left: '3%',
          right: '4%',
          bottom: '3%',
          containLabel: true
        },
        xAxis: [
          {
            boundaryGap: false
          }
        ],
        yAxis: [
          {
            type: 'value'
          }
        ]
      },
      // 服务器返回的数据
      report: {}
    }
  },
  created () {
  },
  async mounted () {
    // ③基于准备好的dom，初始化echarts实例
    var myChart = echarts.init(this.$refs.echartContainer)
    // 发送请求 获取报表数据
    const { data: res } = await this.$http.get('reports/type/1')
    if (res.meta.status !== 200) return this.$message.error('获取报表数据失败')
    this.report = res.data
    // 合并对象
    const obj = _.merge(this.report, this.options)
    console.log(obj)
    // ⑤使用刚指定的配置项和数据显示图表。
    myChart.setOption(obj)
  },
  methods: {

  }
}
</script>

<style lang='less' scoped>
</style>
